Add missing fsloc.[ch] files - oops.

diff --git a/utils/mountd/fsloc.c b/utils/mountd/fsloc.c
new file mode 100644 (file)
index 0000000..44b5b97
--- /dev/null
+++ b/utils/mountd/fsloc.c
@@ -0,0 +1,184 @@
+/*
+ * COPYRIGHT (c) 2006
+ * THE REGENTS OF THE UNIVERSITY OF MICHIGAN
+ * ALL RIGHTS RESERVED
+ *
+ * Permission is granted to use, copy, create derivative works
+ * and redistribute this software and such derivative works
+ * for any purpose, so long as the name of The University of
+ * Michigan is not used in any advertising or publicity
+ * pertaining to the use of distribution of this software
+ * without specific, written prior authorization.  If the
+ * above copyright notice or any other identification of the
+ * University of Michigan is included in any copy of any
+ * portion of this software, then the disclaimer below must
+ * also be included.
+ *
+ * THIS SOFTWARE IS PROVIDED AS IS, WITHOUT REPRESENTATION
+ * FROM THE UNIVERSITY OF MICHIGAN AS TO ITS FITNESS FOR ANY
+ * PURPOSE, AND WITHOUT WARRANTY BY THE UNIVERSITY OF
+ * MICHIGAN OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING
+ * WITHOUT LIMITATION THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE
+ * REGENTS OF THE UNIVERSITY OF MICHIGAN SHALL NOT BE LIABLE
+ * FOR ANY DAMAGES, INCLUDING SPECIAL, INDIRECT, INCIDENTAL, OR
+ * CONSEQUENTIAL DAMAGES, WITH RESPECT TO ANY CLAIM ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OF THE SOFTWARE, EVEN
+ * IF IT HAS BEEN OR IS HEREAFTER ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGES.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+
+#include "fsloc.h"
+#include "exportfs.h"
+
+/* Debugging tool: prints out @servers info to syslog */
+static void replicas_print(struct servers *sp)
+{
+       int i;
+       if (!sp) {
+               syslog(LOG_INFO, "NULL replicas pointer");
+               return;
+       }
+       syslog(LOG_INFO, "replicas listsize=%i", sp->h_num);
+       for (i=0; i<sp->h_num; i++) {
+               syslog(LOG_INFO, "%s:%s",
+                      sp->h_mp[i]->h_host, sp->h_mp[i]->h_path);
+       }
+}
+
+/* Called by setting 'Method = stub' in config file.  Just returns
+ * some syntactically correct gibberish for testing purposes.
+ */
+static struct servers *method_stub(char *key)
+{
+       struct servers *sp;
+       struct mount_point *mp;
+
+       syslog(LOG_INFO, "called method_stub");
+       sp = malloc(sizeof(struct servers));
+       if (!sp)
+               return NULL;
+       mp = calloc(1, sizeof(struct mount_point));
+       if (!mp) {
+               free(sp);
+               return NULL;
+       }
+       sp->h_num = 1;
+       sp->h_mp[0] = mp;
+       mp->h_host = strdup("stub_server");
+       mp->h_path = strdup("/my/test/path");
+       sp->h_referral = 1;
+       return sp;
+}
+
+/* Scan @list, which is a NULL-terminated array of strings of the
+ * form path@host[+host], and return corresponding servers structure.
+ */
+static struct servers *parse_list(char **list)
+{
+       int i;
+       struct servers *res;
+       struct mount_point *mp;
+       char *cp;
+
+       res = malloc(sizeof(struct servers));
+       if (!res)
+               return NULL;
+       res->h_num = 0;
+
+       /* parse each of the answers in sucession. */
+       for (i=0; list[i] && i<FSLOC_MAX_LIST; i++) {
+               mp = calloc(1, sizeof(struct mount_point));
+               if (!mp) {
+                       release_replicas(res);
+                       return NULL;
+               }
+               cp = strchr(list[i], '@');
+               if ((!cp) || list[i][0] != '/') {
+                       syslog(LOG_WARNING, "invalid entry '%s'", list[i]);
+                       continue; /* XXX Need better error handling */
+               }
+               res->h_mp[i] = mp;
+               res->h_num++;
+               mp->h_path = strndup(list[i], cp - list[i]);
+               cp++;
+               mp->h_host = strdup(cp);
+               /* hosts are '+' separated, kernel expects ':' separated */
+               while ( (cp = strchr(mp->h_host, '+')) )
+                      *cp = ':';
+       }
+       return res;
+}
+
+/* @data is a string of form path@host[+host][:path@host[+host]]
+ */
+static struct servers *method_list(char *data)
+{
+       char *copy, *ptr=data;
+       char **list;
+       int i, listsize;
+       struct servers *rv=NULL;
+
+       syslog(LOG_INFO, "method_list(%s)\n", data);
+       for (ptr--, listsize=1; ptr; ptr=index(ptr, ':'), listsize++)
+               ptr++;
+       list = malloc(listsize * sizeof(char *));
+       copy = strdup(data);
+       if (copy)
+               syslog(LOG_INFO, "converted to %s\n", copy);
+       if (list && copy) {
+               ptr = copy;
+               for (i=0; i<listsize; i++) {
+                       list[i] = strsep(&ptr, ":");
+               }
+               rv = parse_list(list);
+       }
+       free(copy);
+       free(list);
+       replicas_print(rv);
+       return rv;
+}
+
+/* Returns appropriately filled struct servers, or NULL if had a problem */
+struct servers *replicas_lookup(int method, char *data, char *key)
+{
+       struct servers *sp=NULL;
+       switch(method) {
+       case FSLOC_NONE:
+               break;
+       case FSLOC_REFER:
+               sp = method_list(data);
+               if (sp)
+                       sp->h_referral = 1;
+               break;
+       case FSLOC_REPLICA:
+               sp = method_list(data);
+               if (sp)
+                       sp->h_referral = 0;
+               break;
+       case FSLOC_STUB:
+               sp = method_stub(data);
+               break;
+       default:
+               syslog(LOG_WARNING, "Unknown method = %i", method);
+       }
+       replicas_print(sp);
+       return sp;
+}
+
+void release_replicas(struct servers *server)
+{
+       int i;
+
+       if (!server) return;
+       for (i = 0; i < server->h_num; i++) {
+               free(server->h_mp[i]->h_host);
+               free(server->h_mp[i]->h_path);
+               free(server->h_mp[i]);
+       }
+       free(server);
+}

diff --git a/utils/mountd/fsloc.h b/utils/mountd/fsloc.h
new file mode 100644 (file)
index 0000000..8296d1c
--- /dev/null
+++ b/utils/mountd/fsloc.h
@@ -0,0 +1,50 @@
+/*
+ * COPYRIGHT (c) 2006
+ * THE REGENTS OF THE UNIVERSITY OF MICHIGAN
+ * ALL RIGHTS RESERVED
+ *
+ * Permission is granted to use, copy, create derivative works
+ * and redistribute this software and such derivative works
+ * for any purpose, so long as the name of The University of
+ * Michigan is not used in any advertising or publicity
+ * pertaining to the use of distribution of this software
+ * without specific, written prior authorization.  If the
+ * above copyright notice or any other identification of the
+ * University of Michigan is included in any copy of any
+ * portion of this software, then the disclaimer below must
+ * also be included.
+ *
+ * THIS SOFTWARE IS PROVIDED AS IS, WITHOUT REPRESENTATION
+ * FROM THE UNIVERSITY OF MICHIGAN AS TO ITS FITNESS FOR ANY
+ * PURPOSE, AND WITHOUT WARRANTY BY THE UNIVERSITY OF
+ * MICHIGAN OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING
+ * WITHOUT LIMITATION THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE
+ * REGENTS OF THE UNIVERSITY OF MICHIGAN SHALL NOT BE LIABLE
+ * FOR ANY DAMAGES, INCLUDING SPECIAL, INDIRECT, INCIDENTAL, OR
+ * CONSEQUENTIAL DAMAGES, WITH RESPECT TO ANY CLAIM ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OF THE SOFTWARE, EVEN
+ * IF IT HAS BEEN OR IS HEREAFTER ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGES.
+ */
+
+#ifndef FSLOC_H
+#define FSLOC_H
+
+#define FSLOC_MAX_LIST 40
+
+struct mount_point {
+       char *h_host;
+       char *h_path;
+};
+
+struct servers {
+       int h_num;
+       struct mount_point *h_mp[FSLOC_MAX_LIST];
+       int h_referral;         /* 0=replica, 1=referral */
+};
+
+struct servers *replicas_lookup(int method, char *data, char *key);
+void release_replicas(struct servers *server);
+
+#endif /* FSLOC_H */